True Qi testing was just the first part of the initial round of the examination: to fully pass this round, one still had to undergo the second part of the test, which assessed a martial artist's attribute of the cultivation technique.
This test really examined a martial artist's natural talent for attributes as every martial artist must choose a cultivation technique based on an attribute as their basic practice in martial arts itself is vitally important; most techniques and martial arts revolved around these attributes.
This could be considered a specific test aimed at martial arts talent.